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Installing a cat flap in your door is a relatively simple process. You'll need to be aware of a few things before beginning. It is possible to install upvc panels with the cat door without cutting holes in your wall or door. They are available from a number of glass manufacturers with a pre-made hole for the door for your pet. 1. Safety The cat flaps made of upvc can be easily installed and fitted to a variety of different doors. They are energy efficient and weatherproof and come with a draft excluder built-in that as